An attempt to detect polarization effects in the envelope of gamma Cassiopeiae with the GI2T interferometerK. Rousselet-Perraut, F. Vakili, D. Mourard, F. Morand, D. Bonneau and Ph. SteeAstron. Astrophys. Suppl. Ser., 123 1 (1997) 173-177DOI: https://doi.org/10.1051/aas:1997310